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Fig. 5. 32, Difflugiidae. A. Diffiugia pyriformis Perty; test 65 to (rarely) 

 400-500^ (after Penard). B, C. Pontigulasia incisa Rhumbler (test 85-150;x 

 long), lateral view; oral view showing "bridge" inside test (after Penard). 

 D, E. Cucurbitella mespiliformis Penard (test \25-\A0ii long), lateral view 

 and oral view of test showing collar (after P.). F. Frenzelina reniformis 

 Penard (test 26-30/i in diameter), hemispherical test, filopodia (after P.). 

 G-I. ClypeoUna marginata Penard (test 80-140/i long), view of broad surface, 

 optical cross-sections of two tests (after P.). J. Nadinella tenella Penard, 

 filopodia, collar, surface details shown at margin of test; schematic (after 

 P.). K. ParmuUna cyathus Penard (test usually 40-45/i long), surface detail 

 shown at upper margin; schematic (after P.). L, M. Heleopera picta Leidy 

 (x250), broad surface showing surface details, narrow surface in outline (after 

 L.). N. Centropyxis aculeata Stein, x300 (after Hoogenraad). O, P. Pseudo- 

 difPugia fulva (Archer) Penard (test 15-23/i long), lateral and oral views 

 (after P.). 



